16 and 19 Carrefour cards can be used in Suning.cn. This is because Suning.cn accepts many different types of bank cards, including debit cards and credit cards. Whether it's a Carrefour card with a number of 16 or a Carrefour card with a number of 19, as long as it's a debit card or a credit card and it's connected with a bank and payment network supported by Suning.cn, it can be paid in Suning.cn.

It should be noted that Carrefour cards in different regions and different banks may be slightly different. For example, 16 bit cards may be more common in some areas, while 19 bit cards may be more common in other areas. Therefore, before using Carrefour card to pay, please be sure to confirm with the bank in your area to understand the specific type of card and payment restrictions.

In addition, with the popularity of mobile payment, Suning.cn also supports the use of mobile phones, electronic wallets and other payment methods, regardless of the number of card numbers. Therefore, even if Carrefour's card can't be used directly, it can be bound to the payment platform or e-wallet to complete the payment indirectly.

To sum up, Carrefour cards with digits 16 and 19 can be used in Suning.cn, as long as they are related to banks and payment networks and follow the payment regulations of Suning.cn. In addition, shopping payment can be completed by other payment methods.